Resilient rivet and method of securing resilient blanket to support



Sept-- 5, 1939 c:. B. SCHNEIBLE 2,172,132

RESILIENT RIVET AND METHOD OF SECURING RESILIENT BLANKET TO SUPPORTFiled Oct. 27, 1937 Patented Sept. 5, 1939 RESILIENT RIVET AND METHODOFSECUR- ING RESILIENT BLANKET T SUPPORT Claude B. Schneible, Chicago,Ill. Application ,October 27, 1937, Serial No. 171,390

7 Claims.

peditious, and eiective means for securingparts together and moreparticularly parts such as la. resilient blanket to a rigid support orbacking plate. A still further object is to provide new and simplemethodsfor locking parts such as a rubber blanket or the like to a plateor back support formed of metal or other rigid material. 4Other specificobjects and advantages will appear as the speciiication proceeds. ,l

The invention is illustrated, in a preferred embodiment by theaccompanying drawing. in which- Figure 1 is a plan view of a metal stripwhich is utlized in compressing the rivet forming a part of myinvention; Fig. 2, a side, view in elevation of a rivet formed of rubberor other suitable resilient material; Fig. 3, a similar view of therivet; the lower portion of the rivet being enclosed by' the metal stripin Fig. l; Fig. 4, a view similar to Fig. 3 of the rivet structure thereshown, the rivet being extended through a portion of a resilient blanketand through an opening in a metal plate; Fig. 5, a view similarV to Fig.4, the metal strip, however, having been withdrawn and the lower portionof the rivet allowed to expand; and Fig. 6, a view similar to Fig. 5 butshowing a modied form of the invention in which the rivet is equippedwith a coil spring retaining member.

In the illustration given, A designates a resilient rivet, and B, ametal plate.

The rivet A may be oi' any suitable construction. I prefer to employ aresilient material, such as rubber because of its resistance to abrasivein sand blasting operations. The rivet is provided with a head portionl0, an intermediate neck portion II, and a lower iiaredsklrt portion I2.'I'he metal strip B is formed of suitably bendable and yet sturdy metalwhich, when rolled about the compressed skirt portion I2 of rivet A, asillustrated in Fig. 3, is sufhciently strong to retain the skirt portionI2 in tubular compressed form. 'I'he lower portion of the metal strip Bis provided with openings I3 which, when the strip is rolled about thelower portion of the rivet, are substantially diametrically opposed.

'I'he structure just described is particularly useful in securing ablanket of rubber or other suitable material to ametal plate or supportto provide a back stop for abrasive blasting operations. 'I'he head I 0of the rivet when secured in position effectively resists the wearingaction of the abrasive and remains in position substantially as long asthe rubber blanket itself is in use. In the illustration given, theblanket M of rubber or other suitable material is shown applied` to ametal back plate I5, the plate I5 being provided with anvaperture I6.The blanket I4 is shown provided with a depression I1 aligned with theopening I6. In the operation oi the device, the structure, asillustrated in Fig. -3, is applied through'an opening in the rubberblanket I4, passing through the recess Il and the aperture I6 of theplate I5. The head Ill is brought flush against the top of the blanketI4. The operation of inserting the rivet is extremely simple because themetal sheath B provides a rigid tube oi relatively small diameter. Afterthe rivet has been inserted into the position shown in Fig. 4, the metalsheath B is removed by applying a prong instrument so as to engagediametrically opposed openings I3 and pulling on the tube The metalsheath B readily slips off oi the rivet, allowing the skirt portion I2to expand within the opening I6 in plate I5 and also to expand withinthe recess I1. It will be observed that the skirt portion I2 flaresoutwardly on both sides of the plate I5, thus anchoring the rivetrigidly to the plate while at the same time maintaining the head IIIagainst the outer face of the blanket Il.

In the modification shown in Fig. 6, the rivet A is provided with a headI0 and a straight shank portion II. The lower portion of the shank Il isprovided with a coil spring member I B having a lower free end, theupper end oi the spring being preferably, integrally cast with the shankII'. The coil spring can be readily threaded into the position shown inFig. 6 so thai the lower portion of the spring bears upwardly againstthe metal plate I5, thus anchoring the 'rivet rigidly against the plate.It will be understood that many other means may be readily employed inplace oi the spring I 8 as a means` for locking the rivet in theposition shown.

Where Irubber blankets are secured to back members by means of metal orother rigid rivets or fastening members, it is found that the heads ofthe rivets or other fastening members are rapidly Wom away so that theblanket springs oul of the rivetvis brought into tight sealing relationto the blanket by the tension which is exerted at the opposite end ofthe rivet when the sheath member is pulled oi. Thus by a very simpleloperation, the rivet is locked in the desired position with the rivethead maintained snugly against the blanket and the skirt portion of therivet locked against movement by expanded portions on each side of theplate. p

While in the foregoing specification, I have set forth illustrativeexamples, it will be understood that these may be modied greatly whilestill employing the invention. The foregoing detailed description hasbeen given for cleamess of understanding only, and no unnecessarylimitations should be understood therefrom, but the appended claimsshould be construed as broadly as permissible, in view of the prior art.

I claim:

1. In combination, a rivet having a head p0rtion, a lower outwardlyiiared expansible portion secured to said head portion by a neck, and asheath member enclosing said expansible portion and maintaining itreleasably in compressed condition, iorrning an elongated bodysubstantially equal to the cross section of the neck.l

2. In combination, a rivet having a head portion, a lower outwardlyiiared expansible portion secured to said head portion, and a sheathmem-v being provided at its lower end with at least one pair ofdiametrically opposed openings.

5. In a structure of the character set forth, a rigid support providedwith an opening, a resilient blanket provided with an opening alignedwith said iirst-mentioned opening, said blanket having also a recess atthe rear side of its opening, and a rivet member having a resilient headportion and an outwardly flared retaining portion expanded within saidopening of said suplport and providing retaining flanges at the rear ofsaid vplatel and within said recess.

6. In a method of the character set forth, the steps of compressing anoutwardly iiared retaining portion of a head-equipped resilient rivetwithin a rigid tube of a cross section smaller than the cross section ofsaid retaining portion, inserting the retaining portion of said rivetvinto an opening of a support, and then removing said tube to permit theretaining portionof said rivet to expand within said opening.

'1. In a method for securing two members having aligned openingstogether by means of a rivet having a head portion and a resilientenlarged skirt portion, the steps of compressing said skirt portionwithin a rigid tube of smaller cross section than said skirt portion,inserting said tube into said aligned openings and then withdrawing saidtube to permit said skirt portion to expand Within at least one of saidopenings.

CLAUDE B. SCHNEIBLE.

